Electronic piano tone circuit

Details Electronic piano tone circuit Electronic piano tone circuit

G - Physics

10

H

84/1.1

G10H 1/02 (2006.01) G10H 5/12 (2006.01)

Patent

CA 2022879

ELECTRONIC PIANO TONE CIRCUIT Abstract Apparatus for generating an enveloped tone signal includes a digital portion for generating an alternating logical wave form at the desired frequency, and a start pulse for initiating the tone; and an analog portion responsive to the alternating logical wave form and the start pulse for creating the tone, the analog portion including charge storage means responsive to the start pulse for storing a charge and switching means connected to the storage means and responsive to the alternating logical wave form or repeatedly bleeding off a portion of the charge from the storage means in synchronization with the alternating logical wave form, and a transducer connected to the storage means for producing the enveloped tone signal.

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